Lab Notes/Qwythos 9B vs Qwen3.5 9B | Local Coding Head-to-Head
LLM TestingJune 24, 2026Watch on YouTube

Qwythos 9B vs Qwen3.5 9B | Local Coding Head-to-Head

Today I’m putting Qwen3.5 9B up against Qwythos 9B, a Qwen3.5-based Mythos fine tune with a much larger context window. Both models are running locally, and I’m giving them the same web coding challenge: Phase 1: Recreate an iPhone-style home screen UI using HTML, CSS, and JavaScript Phase 2: Make Phone, Messages, and Music work, then add a playable Arcade game Phase 3: Build a fancy Qwen3.7 launch website inside the phone’s Safari/browser app This is not a scientific benchmark. It’s a real-world coding test to see which small local model can create a better-looking UI, keep features working, and hold the project together as the challenge gets more complicated. Qwen3.5 9B vs Qwythos 9B. Regular Qwen versus the Mythos fine tune. Let’s see which one handles the challenge better. More local AI tests and projects: https://tokenchaser.net #LocalLLM #Qwen #Qwen3 #Qwythos #WebCoding #AIcoding #OpenSourceAI #LocalAI #LLM #TokenChaser

Models2
Prompts3
Live HTML2
Files2

Video

Models Tested

Qwen3.5 9b
Q8 Unsloth
RTX 3090
Qwythos 9B
Q8
RTX 3090

Prompts Used

1Phase 1
Build a single-file HTML/CSS/JS iPhone home screen UI.

Name the file:
ios-ui-MODEL_NAME.html

Use only one HTML file with embedded CSS and JavaScript. Do not use external libraries, images, icons, CDNs, or internet assets.

The goal is to make the phone look as close to modern iOS as you can.

Requirements:
- Create an iPhone frame with rounded corners, black bezel, Dynamic Island, status bar, and home indicator
- Create a realistic iOS-style home screen with wallpaper, dock, widgets, app icons, notification badges, and smooth spacing
- Include at least 12 app icons with labels
- Make at least 2 apps open when clicked, such as Settings and Notes
- Apps should open inside the phone screen and have a way to return home
- Use iOS-like blur, rounded corners, shadows, gradients, and clean typography
- Add a small label somewhere showing: MODEL_NAME
- Make sure the entire phone fits inside the browser window

Focus on making it polished and realistic instead of adding too many features.

Before finishing, review the UI and fix anything broken, ugly, or overflowing.
2Phase 2
Expand the existing single-file iPhone UI from Phase 1.

Keep the iPhone frame, home screen, dock, app icons, status bar, Dynamic Island, widgets, and overall iOS-style design.

Now make these apps work:

Phone app:
- Show an iOS-style dialer with number buttons, recent calls, contacts/favorites tabs, and a fake call button
- Tapping numbers should fill the dial display
- Include a way to return home

Messages app:
- Show an iOS-style conversation list
- Let the user open at least one conversation
- Include message bubbles, timestamps, contact names, and a text input
- Let the user type and send a new message
- Include a way to return home

Music app:
- Show an iOS-style music player
- Include CSS-made album art, song title, artist, play/pause, next/previous, progress bar, volume slider, and a small playlist
- Play/pause should visually change when clicked
- Include a way to return home

Then add a new app icon called “Arcade”.

When Arcade opens, create a simple playable game inside the iPhone screen.

Game requirements:
- Make a simple obstacle-dodging or racing-style game
- Use keyboard controls and clickable/touch buttons
- Include start, score, game over, restart, and return home
- Add simple polish like animations, collisions, glow effects, or screen shake
- Keep the game fully inside the phone screen

Important:
- Keep everything in one HTML file with embedded CSS and JavaScript
- Do not use external libraries, images, icons, CDNs, or internet assets
- Do not remove anything from Phase 1 unless it is broken
- Keep the UI clean, polished, and iOS-like
- Make sure nothing overflows outside the phone

Before finishing, test:
home → Phone → Messages/send message → Music/play pause → Arcade/play/restart → home.

Fix anything broken or unfinished.
3Phase 3
Expand the existing single-file iPhone UI again.

Keep the iPhone home screen and the Arcade game working.

Now add a Safari app that opens inside the phone.

Inside Safari, build a polished mobile landing page for:

Qwen3.7 Open Model Release

This should look like a fancy AI model launch page, but keep it simple enough to work well.

Requirements:
- Add a Safari app icon to the home screen
- When Safari opens, show a realistic browser screen inside the iPhone
- Include a fake address bar
- Build a scrollable landing page inside Safari
- Add a hero section with the title “Qwen3.7 Open Model Release”
- Add a short subtitle about an open coding and reasoning model
- Add 4 feature cards:
  - Coding
  - Reasoning
  - Long Context
  - Local Deployment
- Add a simple benchmark section with fake polished score cards
- Add one call-to-action button
- Use fancy gradients, glassy cards, rounded corners, subtle animations, and clean spacing
- Make sure the website scrolls inside Safari, not outside the iPhone
- Add a button or gesture to return to the home screen

Important:
Do not try to build a huge website. Make one polished mobile launch page that looks premium and finished.

Before finishing, review the full flow:
home screen → Safari → scroll Qwen3.7 page → return home → Arcade still works.

Fix anything broken, cramped, or overflowing.

Live HTML Outputs

2
Qwen3.5 9b
Q8 UnslothRTX 3090
1
HTML
ios-ui-qwen.html
94.3 KB
OpenDownload
Qwythos 9B
Q8RTX 3090
1
HTML
ios-ui-qweythos.html
49.9 KB
OpenDownload